Scoring - Lunatic
I have no name - 885,072,770 - C - Replay
Just so you know, all those nonspell bombs don't help you (unless you're bombing for survival that is, but it doesn't look like it) if they also finish off the pattern, since you gain the same amount of faith as finishing off the pattern normally, at the cost of 1 power... Make sure to stop shooting while the bomb is active, and wait for the boss to fill the screen with bullets again before finishing it off. Also, many of those bombs would have been better used in a stage portion for collecting items at maximum value, or not used at all (remember that bosses drop significantly more point items if you're at 5 power, so it's probably not a good idea to bomb for faith from Aya onward, except for perhaps Aya's and Sanae's final nonspells since they don't drop any point items after that).
Also, your stage portion strategies could be improved a lot, regarding both collecting point items at maximum value (very important, especially in later stages when your faith is higher), and not missing star items (which are also very important if you're below 950,000 or so faith). My strategies aren't the best, but for comparison purposes, the run I submitted reached boss Hina with 50,000 faith and 15m points more than you did, and boss Nitori with 111,000 faith and 38m more.
At least this confirms what I thought, that a 3-death run on Lunatic should be enough to reach 1 billion.